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1 files changed, 143 insertions, 0 deletions

diff --git a/libjava/classpath/java/security/acl/AclEntry.java b/libjava/classpath/java/security/acl/AclEntry.java
new file mode 100644
index 000000000..47154b285
--- /dev/null
+++ b/libjava/classpath/java/security/acl/AclEntry.java
@@ -0,0 +1,143 @@
+/* AclEntry.java -- An entry in an ACL list.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package java.security.acl;
+
+import java.security.Principal;
+import java.util.Enumeration;
+
+/**
+ * This interface models an entry in an access control list (ACL).  Java
+ * ACL's consist of a list of entries, where each consists of a
+ * <code>Principal</code> and a list of <code>Permission</code>'s which
+ * have been granted to that <code>Principal</code>.  An ACL can also
+ * be <em>negative</em>, which indicates that the list of
+ * <code>Permission</code>'s is a list of permissions that are <em>not</em>
+ * granted to the <code>Principal</code>.  A <code>Principal</code> can
+ * have at most one regular (or positive) ACL entry and one negative
+ * ACL entry.
+ *
+ * @version 0.0
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public interface AclEntry extends Cloneable
+{
+ /**
+   * This method returns the <code>Principal</code> associated with this
+   * ACL entry.
+   *
+   * @return The <code>Principal</code> for this ACL entry
+   */
+  Principal getPrincipal();
+
+  /**
+   * This method sets ths <code>Principal</code> associated with this
+   * ACL entry.  This operation will only succeed if there is not already
+   * a <code>Principal</code> assigned.
+   *
+   * @param user The <code>Principal</code> for this ACL entry
+   *
+   * @return <code>true</code> if the <code>Principal</code> was successfully set or <code>false</code> if this entry already has a <code>Principal</code>.
+   */
+  boolean setPrincipal(Principal user);
+
+  /**
+   * This method sets this ACL entry to be a <em>negative</em> entry, indicating
+   * that it contains a list of permissions that are <em>not</em> granted
+   * to the entry's <code>Principal</code>.  Note that there is no way to
+   * undo this operation.
+   */
+  void setNegativePermissions();
+
+  /**
+   * This method tests whether or not this ACL entry is a negative entry or not.
+   *
+   * @return <code>true</code> if this ACL entry is negative, <code>false</code> otherwise
+   */
+  boolean isNegative();
+
+  /**
+   * This method adds the specified permission to this ACL entry.
+   *
+   * @param permission The <code>Permission</code> to add
+   *
+   * @return <code>true</code> if the permission was added or <code>false</code> if it was already set for this entry
+   */
+  boolean addPermission(Permission permission);
+
+  /**
+   * This method deletes the specified permission to this ACL entry.
+   *
+   * @param perm The <code>Permission</code> to delete from this ACL entry.
+   *
+   * @return <code>true</code> if the permission was successfully deleted or <code>false</code> if the permission was not part of this ACL to begin with
+   */
+  boolean removePermission(Permission perm);
+
+  /**
+   * This method tests whether or not the specified permission is associated
+   * with this ACL entry.
+   *
+   * @param permission The <code>Permission</code> to test
+   *
+   * @return <code>true</code> if this permission is associated with this entry or <code>false</code> otherwise
+   */
+  boolean checkPermission(Permission permission);
+
+  /**
+   * This method returns a list of all <code>Permission</code> objects
+   * associated with this ACL entry as an <code>Enumeration</code>.
+   *
+   * @return A list of permissions for this ACL entry
+   */
+  Enumeration<Permission> permissions();
+
+  /**
+   * This method returns this object as a <code>String</code>.
+   *
+   * @return A <code>String</code> representation of this object
+   */
+  String toString();
+
+  /**
+   * This method returns a clone of this ACL entry
+   *
+   * @return A clone of this ACL entry
+   */
+  Object clone();
+}